Oceanatik logo
HomeDestinationsDive SmartContact Us
Dive Hotspot

Heian Maru

Federated States Of Micronesia, Micronesia
Depth
Depth Icon
118ft
Visibility
Visibility Icon
33ft - 98ft
Entry
Boat Icon
boat
Experience Level
Beginner

About Heian Maru

The Heian Maru lies between Weno and Tonoas, Chuuk Lagoon in water 36 metres deep (120 feet), 12 metres (40 feet) to top of wreck. It's a 11,614 ton passenger / cargo luxury liner that was converted to submarine tender for war. At 155 metres (509 feet) in length the ship can be seen in average 20 metres (65 feet) visibility. It lies port side and its name can be seen clearly. Penetrating at the forward hold through the 24 in./60 cm. Diameter hatch cover you will see Long Lance torpedoes, periscopes and countless artifacts. She is the largest ship in the lagoon torpedoed in the holds and bridge during Operation Hailstone, second only to the Tonan Maru No 3 which was 535 feet long and displaced 19,209 tons. It was salvaged, rebuilt and recommissioned as a whaling ship. Heian Maru was taken down by Grumman Hellcats, the fire in the vessel left her burning until she eventually sank. You can explore the decks and see the angled masts. It takes a good few dives to do this one there's a large gun turret on the bow. The first Hold has some large artillery shells and torpedoes as does Hold Two along with bodies and engines. The engine room itself can be penetrated form within the superstructure..

Heian Maru Dive Info: Key Characteristics and Details

Unit Settings

Terrain and Features: Wreck
Entry Type:Boat
Max Depth:36m
Visibility Range:10m - 30m
Experience Level:Beginner
Best Gas:21% - 30% O2

Marine Life

  • Various

Weather Conditions

Water Temperature

Unit Settings

Dive Operators near Heian Maru

Unit Settings

Browse all dive operators in MicronesiaMicronesia flag

Dive Site Hazards

Although we currently lack information on specific hazards at this location, their absence cannot be assumed. Your knowledge and experience with this dive site could greatly enhance our page – we invite you to share your insights.

Location

North America - Belize

Belize is a diver’s playground where the Caribbean’s only three true atolls cradle kaleidoscopic coral gardens, steep drop-offs and the iconic Great Blue Hole. Glide over nurse-shark nurseries at Hol Chan, descend along Lighthouse Reef’s vertiginous walls, or time your visit to Placencia for exhilarating whale-shark encounters at Gladden Spit. Warm 26-29 °C waters, 15-30 m visibility and a laid-back Creole-Garífuna culture turn every surface interval into a tropical holiday. Whether you’re certifying in shallow seagrass meadows or racking up tech-level depth on coral-encrusted ledges, Belize blends world-class marine biodiversity with sustainable operators, eco-minded lodges and easy travel connections—making it the perfect base for both first-time bubbles and bucket-list underwater adventures.

Learn More

From turtle-dotted coral gardens in St. Anne Marine Park to hammerhead-patrolled drop-offs off North Island, Seychelles delivers a kaleidoscope of undersea thrills wrapped in postcard-perfect island scenery. Warm, crystal-clear waters averaging 27 °C (81 °F) year-round, dependable dive centers with eco-friendly practices, and a laid-back Creole vibe make this Indian Ocean nation a bucket-list destination for beginners and technical divers alike. This comprehensive guide shares firsthand insight into the best reefs, wrecks, and night-dive hotspots, explains seasonal conditions and marine migrations, outlines practical travel and accommodation advice, and highlights sustainable ways to explore—ensuring your Seychelles dive holiday is unforgettable and reef-safe.

India’s 7 500 km of coastline and two remote archipelagos create a dreamscape for beginners and pros alike: seagrass meadows where dugongs graze, manta-patrolled pinnacles off Havelock, Lakshadweep’s gin-clear coral gardens, and Goa’s playful wrecks. Warm 26–30 °C waters, affordable PADI courses, and a vibrant topside culture of spice markets, temple towns, and beach cafés turn every surface interval into an adventure, while eco-minded operators champion reef-safe practices and marine conservation.